PS Selection Method for and Application to GB-SAR Monitoring of Dam Deformation

Table 4

GB-SAR/inverted observation point deformation characteristic value statistics of dam crest.

GB-SAR (inverted plumb points)	GB-SAR measurements (mm)			Inverted plumb line measurements (mm)
	Maximum value	Minimum value	Cumulative value	Maximum value	Minimum value	Cumulative value
P1	1.49	0.12	1.37	0.48	−0.11	0.59
P2	1.98	0.76	1.22	0.70	0.09	0.61
P3	1.91	0.31	1.61	0.84	−0.02	0.86
P4	1.32	−0.19	1.51	0.45	−0.09	0.54
P5	1.05	−0.53	1.58	0.06	−0.11	0.16